For Emergencies, please call the U.S. Park Police dispatch at 202-619-7105
The dedicated force of the United States Park Police patrol the Baltimore-Washington Parkway.
There are no commercial vehicles allowed on the parkway.
Please see the Code of Federal Regulations 36 CFR
Vehicles allowed on the parkway are people movers such as buses, taxis, limousines, and mini-buses.
Please remember to obey all posted speed limits.
Note that the speed limit changes from 55 mph to 45 mph from the Route 450 Annapolis Road exit to the Washington, D.C. boundary.